DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-291BRI-SET, ASAI-ADJ, BRI-DAT
3
or Lucent adjuncts. The TN2208 ESAI MFB is handled by sw itch software as it is
an ISDN BRI compatible board and all maintenance actions referring to ASAI and
Lucent Adjunct Links in th is section apply.
ISDN-BRI endpoints come in a number of c onfigurations. All endp oints require
the D-channel to convey sign aling information to the switch. A voice-only set
requires only one B-channel. A voic e and data-cap able set requires both
B-channels (one for voice and one for data). Therefore, each TN556 port ca n
support either two voic e-only sets or one voice and d ata-capable set. Only a
single ASAI or Lucent adjunc t may be connected to an ISDN-BRI port. Multiple
adjuncts per line are not sup ported.
Figur e 3-1 4 illustrates the physical c onnection (solid line) b etween an ISDN-BRI
Circuit Pack and a voice or voic e/data set. Each physic al connection allows f or
two B-channels, as stated ab ove, plus one D-channel. Each ISDN-BRI circuit
pack can supp ort up to 12 of these PHYSICAL connections to different voic e and
voice/data sets or ASAI and Luc ent adjuncts.
Figure 3-14. ISDN-BRI Set Interactions
This section contains the ISDN-BRI Set, ASAI Adjunct, and Luc ent Adjunct
Maintenance documentatio n. Some of the results of maintenance testing of the
ISDN-BRI Set or the ASAI and Lucent Adjunct may be affec ted by the health of
the ISDN-BRI circuit pack and Port. These interac tions should be kept in mind
when investigating the c ause of ISDN-BRI Set problems.
BRI Line
Circuit Pack
P
O
R
T
D-Channel
B-Channel
B-Channel
PHYSICAL CONNECTION
VOICE
or DATA
SET
Logical Connection
VOICE
or DATA
SET
PBX
Physical Connection